Hot deformation behavior of nano-Al<sub>2</sub>O<sub>3</sub>-dispersion-strengthened Cu20W composite
نویسندگان
چکیده
Abstract Nano-Al 2 O 3 dispersion-strengthened Cu20W composite was fabricated by vacuum hot-pressing sintering process. The electrical conductivity, relative density, and Brinell hardness were tested, respectively. gleeble-1500D thermomechanical simulator used to conduct isothermal compression with strain rates ranging from 0.001 10 s −1 the temperatures 650 950°C. microstructure of Cu–Al /20W observed using an optical microscope a transmission electron microscope, true stress–strain curves analyzed. In addition, influence nano-Al tungsten on thermal deformation process relationship interaction among work hardening, dynamic recovery, recrystallization illustrated. results show that particles pin dislocations inhibit recovery recrystallization. Consequently, has typical characteristics. Hence, possesses outstanding high-temperature performance. optimal processing domain ranged 760 950°C 0.01 0.1 . Furthermore, constitutive equation is established, activation energy 155.069 kJ mol
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ژورنال
عنوان ژورنال: Science and engineering of composite materials
سال: 2021
ISSN: ['0334-181X']
DOI: https://doi.org/10.1515/secm-2021-0044